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弹道学报  2015 

混合坐标系下跟踪自由段弹道导弹的IMM-UPF算法研究

Keywords: 混合坐标系,弹道导弹,自由飞行弹道,交互多模型,不敏粒子滤波

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Abstract:

为了提高对自由段弹道导弹的跟踪精度,在混合坐标系下构建了自由段弹道导弹不做机动时更为准确的系统动力学模型。为提高对自由段弹道导弹目标机动时的适应能力,结合Singer和当前统计模型给出了自由段弹道导弹机动时的系统动力学模型,利用交互多模型(IMM)实现了对导弹的跟踪。在对探测数据的处理过程中,为了避免探测数据中闪烁噪声的影响,提出了IMM-UPF算法,并分别与EKF、UKF、UPF等算法做了对比分析。仿真结果表明,IMM-UPF算法对存在机动的自由段弹道目标以及雷达闪烁噪声具有良好的适应性,较EKF、UKF、UPF能够获得较高的跟踪精度。

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